XML 67 R55.htm IDEA: XBRL DOCUMENT
v3.25.3

Commitments and Contingencies (Details) $ in Millions | Sep. 30, 2025 USD ($)
--- | ---
Commitments and Contingencies Disclosure [Abstract] |
The Company has a remaining commitment to spend | $ 7.8

X
- Definition Joint Development Agreements, Expenditures Related to Engineering Efforts and Purchases of Related Equipment, Remaining Commitment to Spend. + References No definition available. + Details
Name: | ses_JointDevelopmentAgreementsExpendituresRelatedToEngineeringEffortsAndPurchasesOfRelatedEquipmentRemainingCommitmentToSpend
Namespace Prefix: | ses_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration